Apparatus for copying drawings.



A. B. DICK.

APPARATUS FOR COEYING DRAWINGS.

APPLICATION FILED DEC-6,1915.

Patented Apr; 4, 1916.

2 SHEETS-SHEET I- BY P ATTORNEY A. B. DICK.

APPARATUS FOR COPYING DRAWINGS.

APPLICATION FILED DEC. 6. 1915.

5 1 177 936. Patented Apr. 4, 1916.

.1 2 SHEETSSHEET 2.

@dm'd ATTORNEY UNITED STATES PATENT OFFICE.

ALBERT 2B. DICK, or LAKE FOREST, ILLINOIS, Ass'IGNon TO A. B. DICKcoMrAnm-Or' CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS. Y

' APPARATUS FOR COPYING DRAWINGS.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed December 6, 1915. Serial No. 65,200.

To all whom it may concern Be it known that I, ALBERT B. D 1oK, acitizen of the United States, residing at Lake Forest, in the county ofLake and State of Illinois, have invented certain new and usefulImprovements in Apparatus for Copying Drawings, of which the followmg isa specification.

My invention relates to an lmproved apparatus for making tracings orcoples of drawings, or forms or ,other matter to be copied, particularlyadapted for making such tracings or copies dlrectly on a stencil-sheetwhich may thereafter be used for the multiple reproduction of the samein a duplicating machine.

My present invention is somewhat simllar to that disclosed and claimed1n my Patent No.- 1,163,647, apparatus for drawlng on stencils, rantedDec. 14, 19l5. In the patent re erred to a stand is provided in which anelectric lamp or the like is supported, the stand having a transparenttable top which is mounted to revolve about the axis of the standard atthe will of the operator. In my present invention the pane of glass orlike transparent material is car-,

ried by a member which is pivoted at one end to the top of a horizontalsupport ng frame, against which the pane-carrymg member is adapted toseat as a cover, when in inoperative position. A supporting arm ispivoted at the rear of the supporting frame, this arm bemgadapted tosupport the pane-carrying membenin inclined operative position, or to bepositioned out of the way underneath the pane-carrying member when thelatter is in closed or inoperative position. The pane-carrying member isprovided with suitable clamping means so that a sheet of paper carryinga drawing or the like to be copied may be clamped above the pane ofglass, 'with a stencil-sheet, or medium on which the tracing or the copyis to be made. a

:In operation a paper sheet carrymg the drawing or the'like to be copiedis clamped above the transparent pane with a stencilsheet, whichisusually the stencil-sheet of a composite stencil having abacking-sheet, secured above the sheet of paper. The panecarrying memberor cover being opened and positioned at the desired Inclination by meansof the supporting arm, may be so held that light, either natural orartificial,

directed will shine through the pane of glass, and the drawing andstencil superposed upon the same. Preferably the drawing to be copiedand the stencil-sheet are secured at their lower ends by clampspositioned adjacentthe lower end of the pane, and the upper end of thedrawing is similarly clamped above the upper end of the pane. The upperend' of the stencil is provided with the usual button-holes, which aresecured over the buttons of a stencil button-bar, or equivalent device,positioned On the frame somewhatabove the clamping means last referredto. The frame is provided with a transverse slot between the buttons andthe upper paper clamp, the backing-sheet of the stencil being extendedthrough this slot to get the same out of the way. In the pre- 'ferredconstruction, a light frame is removably secured to the upper end of thepane-carrying member, and the backingsheet is looped or secured overthis frame, the frame preferably being provided with a transverse slitthrough which the backingsheet may be passed to frictionally hold thesame.

The objects of my invention are to provide improved devices of thecharacter referred to, other objects of my invention residing in theconstruction of parts and combinations of elements hereafter more fullydescribed and subsequently claimed.

In order that a clearer understanding of my invention may be hadattention is hereby the accompanying drawings forming part ofthisapplication and illustrating preferred embodiments thereof.

In the drawings Figure 1 represents a vertical section taken on line 1,1 of Fig. 3, the pane-carrying member being in open or operativeposition, Fig. 2 is a section taken on the same line, the pane-carryingmember being shown in closed position, Fig. 3 is a front elevation ofthe device opened, Fig. 4 is a transvers view taken on line 44 of Fig.2, Fig. 5' is asectional detail showing the lower paper clamping means,and Fig. 6 is a top plan view of the removable frame for supporting thestencil backing sheet.

Referring to the drawings the member 1 carries the rectangular pane 2 ofglass or other suitable transparent material, the pane resting onshoulders 3 of frame 1, with a suitable pad 4 of felt or the likeinterposed.

ingframe 6 is preferably in the form of a box having the bottom 7, sidewalls 8, 8,

and a top 9, which preferably is formed ofa sheet of metal havingupwardly extending flanges 10, 10 at its front and back endsrespectively. Sheet 9 rests on shoulders 8,

8 formedon the side members 8 of the. frame 6 and the rear end ofsheet 9may rest on a corresponding shoulder of the back member 11 'of frame 6as shown. The, side members 8, 8, the back member 11 and the frontmember 12 extend upwardly above the sheet 9 a distance equal to'orslightly greater than the height of the flanges 10, 10' of sheet 9,forming Vertical flanges against which the hinged member 1 seats whenthe latter is in closed position, as is shown in Fig. 2.

The support for pivoted member 1 comprises an arm 13 which preferablytakes the form of a U-shaped rod, the base portion of which, as is shownat 14:, being rotatably secured beneath flange 10 upon rear member 11 ofsupport 6. The two arms of the pivoted support 13 extend forwardly ateach end of flange 10 and are adapted to be swung upwardly to supportmember 1 in inclined position, as is shown in Fig. 1. For this purposethe side portions of pivoted memher '1 are provided on their under sideswith a pair or pairs of alined openings, in any pair of which the endsof arms 13 may be inserted to support member 1 at a desired angle. henthe device is out of use, arms 13 may be swung into their inoperativeposition shown in Fig. 2, in which the same lie on sheet 9, just insidethe top flanges of side members 8, 8 of the member 6. In this positionarms 13 are out of the way between sheet 9 and member '1, the latterresting above arms 13 on the edge flanges of frame 6 referred to.

Preferably, the support or base member 6 is provided with a slidingdrawer 15 slidablymounted on tracks 16 extending in wardly from'the sidemembersS of the sup- I port. The styluses, etc., to be used in trac ingor drawing on the stencil maybe kept in this drawer and a T square 17may also be placed therein, as shown in Fig. 1, with the arm of the Tsquare extending over the rear end member 18 of the drawer 15, the sheet9 being spaced sufficiently above the top of the drawer as shown topermit the positioning of the T square in this manner.

The front or lower transverse member 19 of pivoted member 1 is providedwith shallow vertical slots 20in which are mounted a pair of clamps 21adapted to overlie the lower edges of the paper sheet carrying thedrawing to be copied and the stencil. Clamps 21 may be held'in anysuitable manner to permit their adjustment as by means of the screws 22.An upper clamp for the less height than the. portion of the frame inwhich the pane 2 is carried, portion 25 having secured thereto a stencilbutton-bar.

26 extending transversely across member 1\ and provided with upwardlyextending buttons 27 adapted to be inserted through the usualbutton-holes of a stencil to secure the stencil in position. Atransverse slot 28 extends through member 1 between clamping plate 23and stencil button-bar 26.

In operation the sheet of paper 29, carrying the drawing or other matterto be traced or: copied, is laid upon the pane 2 and pref-' erably asheet 30 of celluloid having a slightly roughened upper surface is laidupon sheet 29. The use of the roughened transparent sheet 30 is notessential to my invention, butthe same has been found useful in manyinstances, in that,'z'nter alz'a, the same will retain moisture, whichis necessary when stencil-sheets are used of the type which is normallydry but hygroscopic and requires to be softened by the application ofmoisture before being stencil-' ized. The-stencil-sheet 31 is placedabove the paper sheet 29 and abovethe intermediate sheet 30, if thelatter is used. The stencilsheet 31 is represented as being secured atits end, as by mucilage, to a backing-sheet 32, which backing-sheet isusually formed of hard impervious paper. Backing-sheet 32.. is providedwith the usual button-holes 33, whereby the'stencil-sheet may-be securedto the'button-bar of the usual stencil-duplicating machine, after thestencil has been prepared and is'to be used in the making of duplicatecopies.

In my preferred device a removable frame 34. is secured to the upper endof pivoted member 1. This frame is preferably made of light metalbentinto the form shown in Fig. 6, with an inclined transverse slit 35formed between a pair of transverse members 36, 36 at the top of theframe. While frame 34 may be secured to member 1 in any. suitablemanner, it is preferably formed with its side members extendingdownwardly as shown at 37, 37, below the cross piece 38 of the frame,extensions 37, 37 being adapted to be inserted in correspondinglongitudinal slots 39 at the upper end of member 1, extensions 37 beingslidably retained in these slots with cross member 38 resting 29 and ofintermediate sheet 30, if the same is used, being secured by the upperclamp 28, and the upper end of the stencil being sezured by insertingbuttons 27 through the bitton-holes 33 of the stencil. The backingsieet32 is folded back, as is shown in Fig. 7, and passed downwardly throughslot 28, ind then extended through slit 35 of the frame 34:, to get thebacking-sheet out of the way. The paper sheet, intermediate sheet andstencil sheet are then drawn taut and secured at the bottom by clamps21. The member 1 now being raised and supported in a desired inclinedposition by arms 13 is moved so that strong sunlight or artificial lightwill shine through thepane 2 and the sheets 29, 30 and 31, so'that thedrawing on sheet 29 will be clearly visible on the stencilsheet,whereupon the desired drawing may be made with suitable instruments onthe stencil-sheet. For this purpose the left hand side member 10 and thebottom member 19 of member 1 are preferably squared so that the T square17 may be used in connection with either the side edge or the bottomedge of member 1. The sheet9may be silvered or otherwise given areflecting surface, if desired, to act as a reflector, to aid in passinglight through the pane. 29 need not be secured at the bOtiiOIII'bYclamps 22, as stated, if it is not long enough to reach to thatpoint. Inthat case sheet 29 will be held firmly in position by flexible writingsheet 30, and the stencil-sheet, clamped above it.

It should be understood that my invention is not strictly limited to theexact details of construction described, but is as broad as is indicatedby the appended claims. 4

Having now particularly described my invention, what I claim and desireto protect by Letters Patent is as follows 1. In apparatus of thecharacter described, the combination of a horizontal supportingframe'having upstanding marginal flanges, a member pivoted to the frontend thereof, and adapted to. seat against said flanges when closed, saidmember being provided with a pane of transparent ma-' terial, and meansfor clamping sheets in superposition over said pane, and an arm pivotedinside therearflange of said frame, adapted to support said member ininclined position when open, said arm being adapted to rest on the innerside of a side flange of said frame, beneath said memberfiwhen The papersheet said member is closed, substantially as set forth.

2. In apparatus of the character described, the combination of a memberhaving a pane of transparent material therein,

clamping means at one end adapted-to secure a paper sheet and thestencil-sheet of a composite stencil, in superposition, over said pane,clamping means adjacent the opposite end of said member, adaptedto'secure the opposite end of the paper sheet,

and stencil buttons extending upwardly from said member, nearer saidlast-named buttons being adapted to extend through button-holes in theend of the stencil, and said member having a slit therethrough, parallelto and between said buttons and said second clamping means adapted tohave the backing-sheet of said composite stencil said backing-sheet,substantially as set forth.

end than said second clamping means, said 3. In apparatus of the'character described, the combination of. a; member having a pane oftransparent material therein, clamping means at opposite ends adapted tosecure a papersheet, and the stencil-sheet of a .composite stencil, withsaid stencilsheet above said paper sheet above said pane, and a frameextending from one end of said member, said member having a slittherethrough, adapted to have the backingsheet of said stencil extendtherethrough, and said frame being adapted to support saidbacking-sheet, substantially as set forth.

4:. In apparatus of the character de' scribed, the combination 'of amember having a pane of transparent material therein, clamping means atopposite ends adapted to secure a paper sheet, and the stencilsheet of acomposite stencil, with said stencil sheet above said paper sheet abovesaid pane, said member having a transverse slot therethrough, adjacentone end, and frameholding means, at said end and a frame removablymounted in said frame-holding means extending beyond said end, andhaving a slit in its outer end, saidtransverse slot and slit beingadapted to have the backing-sheet of the stencil extend therethrough,

M. H. BURKART, R. R. HARRINGTON,

Correction Letters Patent No. 1,177,936

It is hereby certified that in; Letters 'Petent No. 1,177,936; grantedAprii 4, 1916, upon the application of A lbert B. Dish, of L aEe Forest,Illinois, for animl' F i 3 provement in Apparatus for Copying Drawinge,an error appears in the printed, speeification requiring correctien esfollbws: Page 3, line 78, claim 2, for the v vords said bzickingsheetread extend ther'ethrou gl and thait the said Letters Patent shoiilid beread with this cerrectioil therein that the same maiconform to therecord of theicese in the Pzitent Ofiice. i i

I signed and sea ed this 25th daypf April, A. D., 1916.

IESEALJ i NEWTON,

()l.:3512 Acting Commissioner of Patents.

